Arrangement for adjusting the line of sight of a sighting telescope



StAKUH KUUIVI 33-245. (:42 smolmso SR Sept. 17, 1968 P. TELLIE 3,401,460

- ARRANGEMENT FOR ADJUSTING THE LINE OF SIGHT OF A SIGHTING TELESCOPEFiled July 12, 1966 6V vJa-faw United States Patent 2 Claims. for. 33-50ABSTRACT OF THE DISCLOSURE A telescopic sight for firearms is adjustablymounted at each of two longitudinally-spaced points by means of a pairof eccentric half rings that are held together by a cylindrical springsplit ring, this assembly being held in place on the firearm by means ofa hinged annular collar that is closed by a clamping screw.

My invention has for its object an arrangement for adjusting the line ofsight of the sighting telescope on a gun.

My invention has chiefly for its object to further said adjustment andstabilize the telescope.

Hitherto sighting telescopes were usually carried by guns such ascarbines, rifles and the like through the agency of collars or the likesupports. However, even if particular care is taken in the machining ofsuch arrangements and in their attachment to the gun, it is alwaysnecessary to adjust the sighting telescope in order to hit the target.

In order to reach such a result, the sighting telescopes or glasses usednowadays incorporate sometimes an inner mechanism such as a graticulewhich is adjustable, without this being always suflicient for obtainingthe desired result.

My improved adjusting arrangement for the line of sight of a cylindricalsighting telescope on a gun includes chiefly two similar spaced memberscarrying said sighting telescope and connected with the gun, each memberbeing constituted by a slotted cylindrical ring the axis of which iseccentric with reference to the axis of the sighting telescope, saidring enclosing the sighting telescope being provided furthermore with anannular rib which may be reached by the operator so as to allow arotation of the ring during adjustment while the ring may be fitted onthe gun by a member provided with a cylindrical housing enclosing saidring.

I will now disclose by way of example, in a non-limiting sense, a numberof embodiments of my invention. In the accompanying drawings:

FIG. 1 is a side view of the sighting telescope carried by a support,said figure including a sectional view of the adjusting ring.

FIG. 2 is a cross-section through line IIII of FIG. 1.

FIG. 3 is an axial sectional view of a further embodiment of theadjusting ring.

FIG. 4 is a cross-section through line IV-IV of FIG. 3.

The embodiment illustrated in FIGS. 1 and 2 includes 3,401,460- PatentedSept. 17, 1968 two similar securing members constituted each by twoseparate ring section-s forming substantially half rings, the wholesystem surrounding, except for a narrow gap, the sighting telescope 1 ina manner such that the axis of said ring when fitted on the sightingtelescope 1 is slightly eccentric with reference to the axis of thelatter, the eccentric spacing being shown at e.

Each pair of half rings 3 and 13 is held fast inside a clamping collarincluding two sections 4 and 14 pivotally connected together at one endby a pin 10 while their opposite ends are removably assembled by thescrew 5. One half-ring 14 is secured to an intermediate support 2 orelse directly to a gun through any suitable arrangement such as adove-tailed slideway 11.

After securing the sighting telescope on the gun through its securingmeans and before screwing home the screws 5, the sighting line isadjusted so as to pass through a target located on the axial line of thegun, this being provided by making the two pairs of half rings 3 and 13revolve until the desired result is obtained. This being done, the ringcarrying means are held fast by tightening the screws 5. In order tofurther their assembly, it is convenient to insert the two half rings 3and 13 inside a cylindrical spring blade 6 slotted along a generatingline as illustrated in FIGS. 3 and 4. Preferably, the blade 6 is fittedinside corresponding recesses in the half rings 3 and 13.

It is possible to use for executing the half rings 3 and 13 a materialhaving a low modulus of elasticity such as aluminum or aluminum andmagnesium alloys or else a plastic material. This is of advantage forabsorbing the vibrations produced when firing the gun and for protectingthe sighting glass.

About the half rings 3 and 13 it is possible to provide projecting orknurled parts 8 which allow the operator to more easily take hold of therings during the adjustment of the line of sight.

What I claim is:

1. Apparatus for adjusting the line of sight of a cylindrical sightingtelescope for a gun, comprising two spaced mountings for the telescopeon the gun, each said mounting being comprised by two half rings whoseends are spaced apart and that define between them an outer cylindricalsurface and an inner cylindrical surface eccentric to the outercylindrical surface, a cylindrical spring in the form of a split ringencompassing and interconnecting the two half rings, and a mountingcollar in the form of two portions, means releasably securing togethersaid two portions in closed position about the assembly of the two halfrings and the cylindrical split ring spring, one of the two portions ofsaid collar being fixedly secured to the gun.

2. Apparatus as claimed in claim 1, said split ring spring beingrecessed below the surrounding surface of the half rings.

References Cited UNITED STATES PATENTS 2,424,011 7/ 1947 De Gramont 3350XR 2,449,551 9/1948 Garand 33-5O 2,911,723 10/1959 Ashbrook 33-503,253,361 5/1966 Kingsbury 33--50 XR SAMUEL S. MATTHEWS, PrimaryExaminer.

